Fault 94: 48V Bus Overvolt-Crm 1 - Toro Reelmaster 5010-H Diagnostic Manual

Fault 94: 48V Bus Overvolt—CRM 1
Note:
When any individual cutting reel motor is shut off due to a fault, the TEC-5002 shuts off the other 4
cutting reel motors.
Note:
If multiple machine faults are reported within a few seconds, troubleshooting should begin with the
first cutting reel motor to report a fault.
Note:
All 48 Vdc devices are connected to the same 48 Vdc bus. If this is a system issue, the TEC-5002
combines all 6 of the 48V Bus Overvolt faults (faults 94 though 99) and reports a fault 30 (48V Bus High Voltage).
InfoCenter Display:
Fault Description
Cutting reel motor 1 has detected 67.5 Vdc or more on the 48 Vdc bus.
Circuit Description
All 5 cutting reel motors are supplied with 48 Vdc bus power.
Conditions for Setting the Fault
If cutting reel motor 1 detects that the 48 Vdc bus voltage has exceeded the high limit of 67.5 Vdc, this fault
is reported.
Note:
This fault can also occur if the TEC-5002 loses communication with the motor/generator and reverts
to limp mode. When the TEC-5002 loses communication, it loses engine speed control, and the mechanical
governor limits engine speed to 3,200 rpm.
Recommended Service Actions
Step 1: Verify that the fault repeats.
1. Clear the system faults from the InfoCenter. Refer to
2. Operate the machine.
Pass The fault did not repeat. Go to
Note:
If the fault does not repeat, an isolated event has occurred.
Fail The fault repeated. Go to Step 2.
Step 2: Determine the troubleshooting strategy.
If multiple cutting reel motors are reporting a bus overvolt fault, go to fault 31 and follow the diagnostic steps
for that fault.
If cutting reel motor 1 is the only component reporting this fault, go to step 3.
_____FAULT #94_____
Bus V
48V HI
Clearing Faults from the InfoCenter (page
Returning the Machine to Service (page 22)
366
1
and follow the steps listed.
21).